Re: Two writers, same IP, one won't run

Hi John,

The secret to this process is to understand how the System i tends to
communicate with TCP/IP attached network printers. In most cases, it uses a TCP
socket address at the target IP Address to send the information to be printed.
Using the older TCP/IP v4 addressing scheme, there are a little over 65,000
individual TCP connection ports available per IP Address. Thus you can define a
very large number of writers, to point to the same IP Adress and have them
operate concurrently, as long as they each reference a different TCP port to
make their connection to the specified IP Address.

As soon as two writers specify both the same IP Address AND the same TCP port
number, the first writer to establish a connection will block the second writer
from making a connection.

HTH

Best Regards,

/Paul
--
Paul Tykodi
Principal Consultant
TCS - Tykodi Consulting Services LLC

Tel/Fax: 603-343-1820
Mobile: 603-866-0712
E-mail: ptykodi@xxxxxxxxx
WWW: http://www.tykodi.com

date: Mon, 13 Dec 2010 11:09:38 -0600
from: jmmckee <jmmckee@xxxxxxxxxxxxxx>
subject: Two writers, same IP, one won't run

Something odd is going on.  When I try to start one writer to a printer, it
ends.  All job log states is that it did not end normally.  The other writer to
this IP address is working just

fine.

This has worked fine until today. 

Any ideas?

John McKee